Dam-mold.



T. J. KELLY.

DAM MOLD.-

APPLICATION FILED JULY 8, 1910.

1,000,81 6. Patented Aug. 15, 1911.

WIT IVE'S'SES: l/VI/ENTOI? M g fiioMAsd/ffuxf I BY dam ATTORNEYSCOLUMBIA PLANOGRAPH co., WASHINGTON. D. c.

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THOMAS JAMES KELLY, OF FOND DU LAC, WISCONSIN.

DAM-MOLD.

Specification of Letters Patent. Patented Aug. 15, 1911.

Application filed. July 8, 1910. Serial No. 570,921. a

T 0 all whom it may concern.

Beit known that I, THOMAS JAMES KELLY, a citizen of the United States,and a resident of Fond du Lac, county of Fond du Lac, State ofWisconsin, have invented certain new and useful Improvements inDam-Molds, of which the following is a specification.

My invention is an improvement in dams and molds therefor and consistsin certain novel construction, and combination of parts, hereinafterdescribed and claimed.

The object of the invention is to provide an improved form for abutmentsfor dams, especially adapted for irrigation dams, wherein the abutmentis so arranged that the gate while supported in an efficient manner mayyet be lifted to release the water or lowered to hold the same.

Referring to the drawings forming a part hereof, Figure 1 is a plan viewof the improvement showing an abutment completed and the form removed,and the other abutment with the form in place. Fig. 2 is a section onthe line 22, of Fig. 1, and, Fig. 3 is an end view of one wing of theform or mold.

The dam to be built is preferably composed of two abutments of concrete,one on each side of the stream, and connected by the dam proper. Eachabutment consists of two wings A and A, arranged at approximately aright angle with respect to each other, and the apex B of the angleformed by the wings extends into the stream C, as-

shown, the free ends of the abutments seating in the shore.

The dam proper D is preferably of wood and in the form of a verticallymovable gate, and is slidable in vertical grooves E, one in the apex ofeach abutment. The apex B of each abutment is rounded as shown, and thegroove, or guide way, is of sufficient depth to securely hold the gate.

The form or mold for the abutment is composed of an inner and outerwall. The outer wall consists of two sections F and F. Each section hassecured to its upper and lower edge, in'any suitable manner, areinforcing angle plate H, one of the sides of the plate being connectedto the outer face of the sect-ion, and the other extending laterallytherefrom.

The inner ends of the sections of the outer wall are curved toward eachother to form the peak of the abutment, as shown at I, and

the end of each section is connected to a vertical U-shaped plate K, bymeans of an angle plate M. One side of said plate M 1s secured to thesection by nuts N and the other side to the adjacent side of the plate Kby similar nuts N. The U-shaped plate K is arranged with its concaveface out ward, and forms the groove E for the gate. The outer edges ofthe sides project beyond the outer faces of the sections a suflicientdlstance to permit the attachment of the angle plate. The inner wall ofthe form is also composed of two sect-ions G and G, each section beingreinforced at top and bottom by the angle plate H, in the same manner asthe sections of the outerwall, and the plates stop short of the innerends of the sections. The inner ends of the sectlons are curved, asshown at O, to form the lnner face of the peak of the abutment, and thesaid ends are secured together by angle plates P. An angle plate issecured transversely of the end of each by one side, and the other sidesof the plates lap, and are connected by bolts Q. The outer and innerwalls are also reinforced on their inner faces at their outer ends, byvertical angle plates R, and the plates at each end are connected bycross bars S. The angle plates are connected to the sections by means ofshafts T connected with the sections and passing through openings in oneside of the angle plates, and the shafts are engaged by pins T. Thecross bars are secured to the free sides of the angle plates, and thesaid plates and cross bars may be disconnected from the sections byremoving the pins. The angle plates H of the inner wall sections areprovided at their outer ends with openings, through which pass theangular ends of rods U. The rods extend from the outer end of onesection to the outer end of the other, and are preferably arranged oneat the top and one at the bottom.

The operation of the device will be evident from the description, and itwill also be evident that the improved dam will be very stronglysupported and at a moderate cost. The gate may be raised or lowered, andthe forms may be made of any desired size, in accordance with the sizeof the dam.

I claim:

A form for abutments, comprising inner and outer vertical walls spacedapart laterally, each wall consisting of two sections,

angle plates arranged longitudinally of each section at the top andbottom thereof, the ends of the angle plates being spaced apart from theinner ends of the sections, said sections being arranged atapproximately a right angle to each other and curved at their innerends, angle plates connecting the inner ends of the sections of theinner Wall, a substantially U shaped plate arranged vertically betweenthe'sections of the outer Wall with its concave face outwardly, angleplates connecting the inner ends of the sections With the sides of thesaid plates, angle plates detachably connected With the inner face ofthe outer end of each section, cross bars connecting the plates at eachend of the form, and rods connecting the outer ends of the sections ofthe inner Wall.

THOMAS JAMES KELLY. Witnesses:

J; E. HENNEN, GEORGE GAVIN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). C.

